在尝试保存凭据时使用 Google 驱动 API 库并使用 Java freezes/locks up 应用程序
Using Google Drive API Libraries and Play with Java freezes/locks up application when attempting to save credentials
我在使用 Java 的 Play Framework 应用程序中使用 Google Drive API libraries/code。我在 API 部分的 GCP 项目中正确设置了凭据。我仍在学习这些 Google 库和我正在使用的代码来自我发现的一些帖子，所以我不明白为什么它会冻结，也不确定如何修复它。
我的代码在 运行 在本地运行应用程序 (http://localhost:9000) 时工作正常。但是，当我 运行 在服务器上时，它 freezes/locks 在它尝试保存凭据时启动 - 它永远不会 returns 错误或消息。我已经等了 15 分钟，没有任何回应。这是代码行：
credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
这是我正在使用的class：
package google;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets.Details;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import controllers.GlobalUtilities.StringControl;
import play.Configuration;
import play.Logger;
public class GoogleDrive {
/** Application name. */
private static final String APPLICATION_NAME = "PTP";
/** Directory to store user credentials for this application. */
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
".credentials/ptpgoogledrive");
/** Global instance of the {@link FileDataStoreFactory}. */
private static FileDataStoreFactory DATA_STORE_FACTORY;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Global instance of the HTTP transport. */
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*
* If modifying these scopes, delete your previously saved credentials at
* ~/.credentials/drive-java-quickstart
*/
// private static final List<String> SCOPES =
// Arrays.asList(DriveScopes.DRIVE_METADATA_READONLY);
private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
@SuppressWarnings("deprecation")
public static Credential authorize() throws IOException {
Credential credential = null;
String credentialsFileName = "";
try {
Logger.info("GoogleDrive: authorize: Starting...");
// Set up the credentials...
String clientID = Configuration.root().getString("google.drive.credentials.clientID");
String clientSecret = Configuration.root().getString("google.drive.credentials.clientSecret");
String authURI = Configuration.root().getString("google.drive.credentials.authURI");
String tokenURI = Configuration.root().getString("google.drive.credentials.tokenURI");
Logger.info("GoogleDrive: authorize: clientID = " + clientID);
Logger.info("GoogleDrive: authorize: clientSecret = " + clientSecret);
Logger.info("GoogleDrive: authorize: authURI = " + authURI);
Logger.info("GoogleDrive: authorize: tokenURI = " + tokenURI);
GoogleClientSecrets.Details details = new Details();
details.setClientId(clientID);
details.setClientSecret(clientSecret);
details.setAuthUri(authURI);
details.setTokenUri(tokenURI);
GoogleClientSecrets clientSecrets = new GoogleClientSecrets().setInstalled(details);
Logger.info("GoogleDrive: authorize: Found client secrets...");
if (clientSecrets == null) {
Logger.info("GoogleDrive: authorize: GoogleClientSecrets is null...");
}
// Build flow and trigger user authorization request...
Logger.info("GoogleDrive: authorize: Setting GoogleAuthorizationCodeFlow...");
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
clientSecrets, SCOPES).setDataStoreFactory(DATA_STORE_FACTORY).setAccessType("offline").build();
Logger.info("GoogleDrive: authorize: GoogleAuthorizationCodeFlow has been set...");
Logger.info("GoogleDrive: authorize: Setting credenital...");
credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
Logger.info("GoogleDrive: authorize: Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
} catch (IOException ex) {
System.out.println(ex.toString());
System.out.println("Could not find file " + credentialsFileName);
ex.printStackTrace();
}
Logger.info("GoogleDrive: authorize: Ending...");
return credential;
}
/**
* Build and return an authorized Drive client service.
*
* @return an authorized Drive client service
* @throws IOException
*/
public static Drive getDriveService() throws IOException {
Logger.info("GoogleDrive: getDriveService: Starting...");
Credential credential = null;
Drive googleDrive = null;
try {
credential = authorize();
googleDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
} catch (IOException ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return googleDrive;
}
public static String getPath() {
String s = GoogleDrive.class.getName();
int i = s.lastIndexOf(".");
if (i > -1)
s = s.substring(i + 1);
s = s + ".class";
System.out.println("Class Name: " + s);
Object testPath = GoogleDrive.class.getResource(s);
System.out.println("Current Path: " + testPath);
return "";
}
public static String uploadFile(java.io.File file) throws IOException {
String fileID = "";
try {
Logger.info("GoogleDrive: uploadFile: Starting File Upload...");
// Build a new authorized API client service.
Drive service = getDriveService();
Logger.info("GoogleDrive: uploadFile: Completed Drive Service...");
String fullFilePath = file.getAbsolutePath();
Logger.info("GoogleDrive: uploadFile: Full File Path: " + fullFilePath);
File fileMetadata = new File();
String fileName = StringControl.rightBack(fullFilePath, "\");
String fileContentType = getContentType(fileName);
Logger.info("GoogleDrive: uploadFile: File Content Type: " + fileContentType);
fileMetadata.setName(fileName);
Logger.info("GoogleDrive: uploadFile: File Name = " + fileName);
// Set the folder...
String folderID = Configuration.root().getString("google.drive.folderid");
Logger.info("GoogleDrive: uploadFile: Folder ID = " + folderID);
fileMetadata.setParents(Collections.singletonList(folderID));
java.io.File filePath = new java.io.File(fullFilePath);
FileContent mediaContent = new FileContent(fileContentType, filePath);
File fileToUpload = service.files().create(fileMetadata, mediaContent).setFields("id, parents").execute();
fileID = fileToUpload.getId();
Logger.info("GoogleDrive: uploadFile: File ID: " + fileID);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
Logger.info("GoogleDrive: uploadFile: Ending File Upload...");
return fileID;
}
public static String getContentType(String filePath) throws Exception {
String type = "";
try {
Path path = Paths.get(filePath);
type = Files.probeContentType(path);
System.out.println(type);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return type;
}
}
我有一堆日志记录来确定代码冻结的位置，这是输出：
GoogleDrive: uploadFile: Starting File Upload...
GoogleDrive: getDriveService: Starting...
GoogleDrive: authorize: Starting...
GoogleDrive: authorize: clientID = (my client ID)
GoogleDrive: authorize: clientSecret = (my client secret)
GoogleDrive: authorize: authURI = https://accounts.google.com/o/oauth2/auth
GoogleDrive: authorize: tokenURI = https://accounts.google.com/o/oauth2/token
GoogleDrive: authorize: Found client secrets...
GoogleDrive: authorize: Setting GoogleAuthorizationCodeFlow...
GoogleDrive: authorize: GoogleAuthorizationCodeFlow has been set...
GoogleDrive: authorize: Setting credenital...
如您所见，它永远不会到达下一个日志输出：
Logger.info("GoogleDrive: authorize: Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
如果您能通过示例向我展示我缺少的内容或修复上面的代码，我将不胜感激。提前致谢。
我对此的回答是使用服务帐户而不是 OAuth2。
我在我的 Google 云平台项目中创建了一个服务帐户：
https://console.cloud.google.com/iam-admin/serviceaccounts/
我为我的 Compute Engine 实例使用了默认帐户并创建了所需的密钥并将文件下载到我的机器并在我上面的代码中引用。
文件上传没有问题。
这是我的最终代码：
package google;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;
import controllers.GlobalUtilities.StringControl;
import play.Configuration;
import play.Logger;
public class GoogleDrive {
/** Application name. */
private static final String APPLICATION_NAME = "PTP";
/** Directory to store user credentials for this application. */
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
".credentials/ptpgoogledrive");
/** Global instance of the {@link FileDataStoreFactory}. */
private static FileDataStoreFactory DATA_STORE_FACTORY;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Global instance of the HTTP transport. */
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*
* If modifying these scopes, delete your previously saved credentials at
* ~/.credentials/drive-java-quickstart
*/
private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
@SuppressWarnings("deprecation")
public static GoogleCredential authorize() throws IOException {
GoogleCredential credential = null;
String credentialsFileName = "";
try {
Logger.info("GoogleDrive: authorize: Starting...");
Logger.info("GoogleDrive: authorize: Getting credentialsFileName path...");
credentialsFileName = Configuration.root().getString("google.drive.credentials.file");
Logger.info("GoogleDrive: authorize: credentialsFileName = " + credentialsFileName);
Logger.info("GoogleDrive: authorize: Setting InputStream...");
InputStream in = GoogleDrive.class.getClassLoader().getResourceAsStream(credentialsFileName);
if (in == null) {
Logger.info("GoogleDrive: authorize: InputStream is null");
}
Logger.info("GoogleDrive: authorize: InputStream set...");
Logger.info("GoogleDrive: authorize: Setting credential...");
credential = GoogleCredential.fromStream(in, HTTP_TRANSPORT, JSON_FACTORY)
.createScoped(Collections.singleton(DriveScopes.DRIVE));
} catch (IOException ex) {
System.out.println(ex.toString());
System.out.println("Could not find file " + credentialsFileName);
ex.printStackTrace();
}
Logger.info("GoogleDrive: authorize: Ending...");
return credential;
}
/**
* Build and return an authorized Drive client service.
*
* @return an authorized Drive client service
* @throws IOException
*/
public static Drive getDriveService() throws IOException {
Logger.info("GoogleDrive: getDriveService: Starting...");
GoogleCredential credential = null;
Drive googleDrive = null;
try {
credential = authorize();
Logger.info("GoogleDrive: getDriveService: Credentials set...");
googleDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
} catch (IOException ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return googleDrive;
}
public static String getPath() {
String s = GoogleDrive.class.getName();
int i = s.lastIndexOf(".");
if (i > -1)
s = s.substring(i + 1);
s = s + ".class";
System.out.println("Class Name: " + s);
Object testPath = GoogleDrive.class.getResource(s);
System.out.println("Current Path: " + testPath);
return "";
}
public static String uploadFile(java.io.File file, String folderIDToFind) throws IOException {
String fileID = "";
String fileName = "";
try {
Logger.info("GoogleDrive: uploadFile: Starting File Upload...");
// Build a new authorized API client service.
Drive service = getDriveService();
Logger.info("GoogleDrive: uploadFile: Completed Drive Service...");
// Set the folder...
String folderID = Configuration.root().getString("google.drive.folderid");
Logger.info("GoogleDrive: uploadFile: Folder ID = " + folderID);
String folderIDToUse = getSubfolderID(service, folderID, folderIDToFind);
String fullFilePath = file.getAbsolutePath();
Logger.info("GoogleDrive: uploadFile: Full File Path: " + fullFilePath);
File fileMetadata = new File();
// Let's see what slashes exist to get the correct file name...
if (fullFilePath.contains("/")) {
fileName = StringControl.rightBack(fullFilePath, "/");
} else {
fileName = StringControl.rightBack(fullFilePath, "\");
}
String fileContentType = getContentType(fileName);
Logger.info("GoogleDrive: uploadFile: File Content Type: " + fileContentType);
fileMetadata.setName(fileName);
Logger.info("GoogleDrive: uploadFile: File Name = " + fileName);
Logger.info("GoogleDrive: uploadFile: Setting the folder...");
fileMetadata.setParents(Collections.singletonList(folderIDToUse));
Logger.info("GoogleDrive: uploadFile: Folder set...");
// Team Drive settings...
fileMetadata.set("supportsTeamDrives", true);
java.io.File filePath = new java.io.File(fullFilePath);
FileContent mediaContent = new FileContent(fileContentType, filePath);
File fileToUpload = service.files().create(fileMetadata, mediaContent).setSupportsTeamDrives(true)
.setFields("id, parents").execute();
fileID = fileToUpload.getId();
Logger.info("GoogleDrive: uploadFile: File ID: " + fileID);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
Logger.info("GoogleDrive: uploadFile: Ending File Upload...");
return fileID;
}
public static String getContentType(String filePath) throws Exception {
String type = "";
try {
Path path = Paths.get(filePath);
type = Files.probeContentType(path);
System.out.println(type);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return type;
}
public static String getSubfolderID(Drive service, String parentFolderID, String folderKeyToGet) {
// We need to see if the folder exists based on the ID...
String folderID = "";
Boolean foundFolder = false;
FileList result = null;
File newFolder = null;
// Set the drive query...
String driveQuery = "mimeType='application/vnd.google-apps.folder' and '" + parentFolderID
+ "' in parents and name contains '" + folderKeyToGet + "' and trashed=false";
try {
result = service.files().list().setQ(driveQuery).execute();
} catch (IOException e) {
e.printStackTrace();
}
for (File folder : result.getFiles()) {
System.out.printf("Found folder: %s (%s)\n", folder.getName(), folder.getId());
foundFolder = true;
folderID = folder.getId();
}
if (foundFolder != true) {
// Need to create the folder...
File fileMetadata = new File();
fileMetadata.setName(folderKeyToGet);
fileMetadata.setTeamDriveId(parentFolderID);
fileMetadata.set("supportsTeamDrives", true);
fileMetadata.setMimeType("application/vnd.google-apps.folder");
fileMetadata.setParents(Collections.singletonList(parentFolderID));
try {
newFolder = service.files().create(fileMetadata).setSupportsTeamDrives(true).setFields("id, parents")
.execute();
} catch (IOException e) {
e.printStackTrace();
}
// Send back the folder ID...
folderID = newFolder.getId();
System.out.println("Folder ID: " + newFolder.getId());
}
return folderID;
}
}
我希望这对下一个人有帮助。
我在使用 Java 的 Play Framework 应用程序中使用 Google Drive API libraries/code。我在 API 部分的 GCP 项目中正确设置了凭据。我仍在学习这些 Google 库和我正在使用的代码来自我发现的一些帖子，所以我不明白为什么它会冻结，也不确定如何修复它。
我的代码在 运行 在本地运行应用程序 (http://localhost:9000) 时工作正常。但是，当我 运行 在服务器上时，它 freezes/locks 在它尝试保存凭据时启动 - 它永远不会 returns 错误或消息。我已经等了 15 分钟，没有任何回应。这是代码行：
credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
这是我正在使用的class：
package google;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets.Details;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import controllers.GlobalUtilities.StringControl;
import play.Configuration;
import play.Logger;
public class GoogleDrive {
/** Application name. */
private static final String APPLICATION_NAME = "PTP";
/** Directory to store user credentials for this application. */
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
".credentials/ptpgoogledrive");
/** Global instance of the {@link FileDataStoreFactory}. */
private static FileDataStoreFactory DATA_STORE_FACTORY;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Global instance of the HTTP transport. */
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*
* If modifying these scopes, delete your previously saved credentials at
* ~/.credentials/drive-java-quickstart
*/
// private static final List<String> SCOPES =
// Arrays.asList(DriveScopes.DRIVE_METADATA_READONLY);
private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
@SuppressWarnings("deprecation")
public static Credential authorize() throws IOException {
Credential credential = null;
String credentialsFileName = "";
try {
Logger.info("GoogleDrive: authorize: Starting...");
// Set up the credentials...
String clientID = Configuration.root().getString("google.drive.credentials.clientID");
String clientSecret = Configuration.root().getString("google.drive.credentials.clientSecret");
String authURI = Configuration.root().getString("google.drive.credentials.authURI");
String tokenURI = Configuration.root().getString("google.drive.credentials.tokenURI");
Logger.info("GoogleDrive: authorize: clientID = " + clientID);
Logger.info("GoogleDrive: authorize: clientSecret = " + clientSecret);
Logger.info("GoogleDrive: authorize: authURI = " + authURI);
Logger.info("GoogleDrive: authorize: tokenURI = " + tokenURI);
GoogleClientSecrets.Details details = new Details();
details.setClientId(clientID);
details.setClientSecret(clientSecret);
details.setAuthUri(authURI);
details.setTokenUri(tokenURI);
GoogleClientSecrets clientSecrets = new GoogleClientSecrets().setInstalled(details);
Logger.info("GoogleDrive: authorize: Found client secrets...");
if (clientSecrets == null) {
Logger.info("GoogleDrive: authorize: GoogleClientSecrets is null...");
}
// Build flow and trigger user authorization request...
Logger.info("GoogleDrive: authorize: Setting GoogleAuthorizationCodeFlow...");
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
clientSecrets, SCOPES).setDataStoreFactory(DATA_STORE_FACTORY).setAccessType("offline").build();
Logger.info("GoogleDrive: authorize: GoogleAuthorizationCodeFlow has been set...");
Logger.info("GoogleDrive: authorize: Setting credenital...");
credential = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
Logger.info("GoogleDrive: authorize: Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
} catch (IOException ex) {
System.out.println(ex.toString());
System.out.println("Could not find file " + credentialsFileName);
ex.printStackTrace();
}
Logger.info("GoogleDrive: authorize: Ending...");
return credential;
}
/**
* Build and return an authorized Drive client service.
*
* @return an authorized Drive client service
* @throws IOException
*/
public static Drive getDriveService() throws IOException {
Logger.info("GoogleDrive: getDriveService: Starting...");
Credential credential = null;
Drive googleDrive = null;
try {
credential = authorize();
googleDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
} catch (IOException ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return googleDrive;
}
public static String getPath() {
String s = GoogleDrive.class.getName();
int i = s.lastIndexOf(".");
if (i > -1)
s = s.substring(i + 1);
s = s + ".class";
System.out.println("Class Name: " + s);
Object testPath = GoogleDrive.class.getResource(s);
System.out.println("Current Path: " + testPath);
return "";
}
public static String uploadFile(java.io.File file) throws IOException {
String fileID = "";
try {
Logger.info("GoogleDrive: uploadFile: Starting File Upload...");
// Build a new authorized API client service.
Drive service = getDriveService();
Logger.info("GoogleDrive: uploadFile: Completed Drive Service...");
String fullFilePath = file.getAbsolutePath();
Logger.info("GoogleDrive: uploadFile: Full File Path: " + fullFilePath);
File fileMetadata = new File();
String fileName = StringControl.rightBack(fullFilePath, "\");
String fileContentType = getContentType(fileName);
Logger.info("GoogleDrive: uploadFile: File Content Type: " + fileContentType);
fileMetadata.setName(fileName);
Logger.info("GoogleDrive: uploadFile: File Name = " + fileName);
// Set the folder...
String folderID = Configuration.root().getString("google.drive.folderid");
Logger.info("GoogleDrive: uploadFile: Folder ID = " + folderID);
fileMetadata.setParents(Collections.singletonList(folderID));
java.io.File filePath = new java.io.File(fullFilePath);
FileContent mediaContent = new FileContent(fileContentType, filePath);
File fileToUpload = service.files().create(fileMetadata, mediaContent).setFields("id, parents").execute();
fileID = fileToUpload.getId();
Logger.info("GoogleDrive: uploadFile: File ID: " + fileID);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
Logger.info("GoogleDrive: uploadFile: Ending File Upload...");
return fileID;
}
public static String getContentType(String filePath) throws Exception {
String type = "";
try {
Path path = Paths.get(filePath);
type = Files.probeContentType(path);
System.out.println(type);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return type;
}
}
我有一堆日志记录来确定代码冻结的位置，这是输出：
GoogleDrive: uploadFile: Starting File Upload...
GoogleDrive: getDriveService: Starting...
GoogleDrive: authorize: Starting...
GoogleDrive: authorize: clientID = (my client ID)
GoogleDrive: authorize: clientSecret = (my client secret)
GoogleDrive: authorize: authURI = https://accounts.google.com/o/oauth2/auth
GoogleDrive: authorize: tokenURI = https://accounts.google.com/o/oauth2/token
GoogleDrive: authorize: Found client secrets...
GoogleDrive: authorize: Setting GoogleAuthorizationCodeFlow...
GoogleDrive: authorize: GoogleAuthorizationCodeFlow has been set...
GoogleDrive: authorize: Setting credenital...
如您所见，它永远不会到达下一个日志输出：
Logger.info("GoogleDrive: authorize: Credentials saved to " + DATA_STORE_DIR.getAbsolutePath());
如果您能通过示例向我展示我缺少的内容或修复上面的代码，我将不胜感激。提前致谢。
我对此的回答是使用服务帐户而不是 OAuth2。
我在我的 Google 云平台项目中创建了一个服务帐户：
https://console.cloud.google.com/iam-admin/serviceaccounts/
我为我的 Compute Engine 实例使用了默认帐户并创建了所需的密钥并将文件下载到我的机器并在我上面的代码中引用。
文件上传没有问题。
这是我的最终代码：
package google;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.api.services.drive.model.FileList;
import controllers.GlobalUtilities.StringControl;
import play.Configuration;
import play.Logger;
public class GoogleDrive {
/** Application name. */
private static final String APPLICATION_NAME = "PTP";
/** Directory to store user credentials for this application. */
private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
".credentials/ptpgoogledrive");
/** Global instance of the {@link FileDataStoreFactory}. */
private static FileDataStoreFactory DATA_STORE_FACTORY;
/** Global instance of the JSON factory. */
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/** Global instance of the HTTP transport. */
private static HttpTransport HTTP_TRANSPORT;
/**
* Global instance of the scopes required by this quickstart.
*
* If modifying these scopes, delete your previously saved credentials at
* ~/.credentials/drive-java-quickstart
*/
private static final List<String> SCOPES = Arrays.asList(DriveScopes.DRIVE);
static {
try {
HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport();
DATA_STORE_FACTORY = new FileDataStoreFactory(DATA_STORE_DIR);
} catch (Throwable t) {
t.printStackTrace();
System.exit(1);
}
}
/**
* Creates an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
@SuppressWarnings("deprecation")
public static GoogleCredential authorize() throws IOException {
GoogleCredential credential = null;
String credentialsFileName = "";
try {
Logger.info("GoogleDrive: authorize: Starting...");
Logger.info("GoogleDrive: authorize: Getting credentialsFileName path...");
credentialsFileName = Configuration.root().getString("google.drive.credentials.file");
Logger.info("GoogleDrive: authorize: credentialsFileName = " + credentialsFileName);
Logger.info("GoogleDrive: authorize: Setting InputStream...");
InputStream in = GoogleDrive.class.getClassLoader().getResourceAsStream(credentialsFileName);
if (in == null) {
Logger.info("GoogleDrive: authorize: InputStream is null");
}
Logger.info("GoogleDrive: authorize: InputStream set...");
Logger.info("GoogleDrive: authorize: Setting credential...");
credential = GoogleCredential.fromStream(in, HTTP_TRANSPORT, JSON_FACTORY)
.createScoped(Collections.singleton(DriveScopes.DRIVE));
} catch (IOException ex) {
System.out.println(ex.toString());
System.out.println("Could not find file " + credentialsFileName);
ex.printStackTrace();
}
Logger.info("GoogleDrive: authorize: Ending...");
return credential;
}
/**
* Build and return an authorized Drive client service.
*
* @return an authorized Drive client service
* @throws IOException
*/
public static Drive getDriveService() throws IOException {
Logger.info("GoogleDrive: getDriveService: Starting...");
GoogleCredential credential = null;
Drive googleDrive = null;
try {
credential = authorize();
Logger.info("GoogleDrive: getDriveService: Credentials set...");
googleDrive = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME).build();
} catch (IOException ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return googleDrive;
}
public static String getPath() {
String s = GoogleDrive.class.getName();
int i = s.lastIndexOf(".");
if (i > -1)
s = s.substring(i + 1);
s = s + ".class";
System.out.println("Class Name: " + s);
Object testPath = GoogleDrive.class.getResource(s);
System.out.println("Current Path: " + testPath);
return "";
}
public static String uploadFile(java.io.File file, String folderIDToFind) throws IOException {
String fileID = "";
String fileName = "";
try {
Logger.info("GoogleDrive: uploadFile: Starting File Upload...");
// Build a new authorized API client service.
Drive service = getDriveService();
Logger.info("GoogleDrive: uploadFile: Completed Drive Service...");
// Set the folder...
String folderID = Configuration.root().getString("google.drive.folderid");
Logger.info("GoogleDrive: uploadFile: Folder ID = " + folderID);
String folderIDToUse = getSubfolderID(service, folderID, folderIDToFind);
String fullFilePath = file.getAbsolutePath();
Logger.info("GoogleDrive: uploadFile: Full File Path: " + fullFilePath);
File fileMetadata = new File();
// Let's see what slashes exist to get the correct file name...
if (fullFilePath.contains("/")) {
fileName = StringControl.rightBack(fullFilePath, "/");
} else {
fileName = StringControl.rightBack(fullFilePath, "\");
}
String fileContentType = getContentType(fileName);
Logger.info("GoogleDrive: uploadFile: File Content Type: " + fileContentType);
fileMetadata.setName(fileName);
Logger.info("GoogleDrive: uploadFile: File Name = " + fileName);
Logger.info("GoogleDrive: uploadFile: Setting the folder...");
fileMetadata.setParents(Collections.singletonList(folderIDToUse));
Logger.info("GoogleDrive: uploadFile: Folder set...");
// Team Drive settings...
fileMetadata.set("supportsTeamDrives", true);
java.io.File filePath = new java.io.File(fullFilePath);
FileContent mediaContent = new FileContent(fileContentType, filePath);
File fileToUpload = service.files().create(fileMetadata, mediaContent).setSupportsTeamDrives(true)
.setFields("id, parents").execute();
fileID = fileToUpload.getId();
Logger.info("GoogleDrive: uploadFile: File ID: " + fileID);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
Logger.info("GoogleDrive: uploadFile: Ending File Upload...");
return fileID;
}
public static String getContentType(String filePath) throws Exception {
String type = "";
try {
Path path = Paths.get(filePath);
type = Files.probeContentType(path);
System.out.println(type);
} catch (Exception ex) {
System.out.println(ex.toString());
ex.printStackTrace();
}
return type;
}
public static String getSubfolderID(Drive service, String parentFolderID, String folderKeyToGet) {
// We need to see if the folder exists based on the ID...
String folderID = "";
Boolean foundFolder = false;
FileList result = null;
File newFolder = null;
// Set the drive query...
String driveQuery = "mimeType='application/vnd.google-apps.folder' and '" + parentFolderID
+ "' in parents and name contains '" + folderKeyToGet + "' and trashed=false";
try {
result = service.files().list().setQ(driveQuery).execute();
} catch (IOException e) {
e.printStackTrace();
}
for (File folder : result.getFiles()) {
System.out.printf("Found folder: %s (%s)\n", folder.getName(), folder.getId());
foundFolder = true;
folderID = folder.getId();
}
if (foundFolder != true) {
// Need to create the folder...
File fileMetadata = new File();
fileMetadata.setName(folderKeyToGet);
fileMetadata.setTeamDriveId(parentFolderID);
fileMetadata.set("supportsTeamDrives", true);
fileMetadata.setMimeType("application/vnd.google-apps.folder");
fileMetadata.setParents(Collections.singletonList(parentFolderID));
try {
newFolder = service.files().create(fileMetadata).setSupportsTeamDrives(true).setFields("id, parents")
.execute();
} catch (IOException e) {
e.printStackTrace();
}
// Send back the folder ID...
folderID = newFolder.getId();
System.out.println("Folder ID: " + newFolder.getId());
}
return folderID;
}
}
我希望这对下一个人有帮助。